| Reference Number | TPC/3/6/9 |
| Title | Detail Layout of Elevator Lock Mechanism |
| Level | Item |
| Date | 28 November 1974 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D14/83 issue A. Drawn by A J C. Works number 2815/461. Original date 5 April 1972. |
| Extent | 1 drawing |
| Series | National Theatre Drum Drawings Part 2: 1 of 2 |